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    • 2. 发明授权
    • Method and system for transmit power control in a multiple-input multiple-output wireless communication system
    • 多输入多输出无线通信系统中发射功率控制的方法和系统
    • US07643843B2
    • 2010-01-05
    • US11152511
    • 2005-06-14
    • Jung-Lin PanRobert Lind OlesenYingming Tsai
    • Jung-Lin PanRobert Lind OlesenYingming Tsai
    • H04B7/00
    • H01Q1/2216H01Q21/28H04B7/0417H04B7/0623H04B7/063H04W52/248H04W52/42
    • The present invention is related to a method and system for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver comprise multiple antennae for transmission and reception. The transmitter comprises a power allocation unit for controlling transmit power based on a feedback received from the receiver. The receiver comprises a channel estimator and a singular value decomposition (SVD) unit. The channel estimator generates a channel matrix from a signal received from the transmitter and the SVD unit decomposes the channel matrix into D, U and V matrices. The receiver sends a feedback generated based on output from the SVD unit to the transmitter for controlling the transmit power. The feedback may be one of an eigenvalue, a transmit power level or a power control bit or command. A hybrid scheme for selecting one of them based on channel condition may be implemented.
    • 本发明涉及一种用于多输入多输出(MIMO)无线通信系统中的发射功率控制的方法和系统。 发射机和接收机都包括用于传输和接收的多个天线。 发射机包括功率分配单元,用于基于从接收机接收的反馈来控制发射功率。 接收机包括信道估计器和奇异值分解(SVD)单元。 信道估计器从从发射机接收的信号中生成信道矩阵,并且SVD单元将信道矩阵分解为D,U和V矩阵。 接收机将基于SVD单元的输出产生的反馈发送到发射机以控制发射功率。 反馈可以是特征值,发射功率电平或功率控制位或命令之一。 可以实现用于基于信道条件选择其中的一个的混合方案。
    • 3. 发明授权
    • MIMO beamforming-based single carrier frequency division multiple access system
    • 基于MIMO波束成形的单载波频分多址系统
    • US08553521B2
    • 2013-10-08
    • US12377975
    • 2006-09-25
    • Guodong ZhangJung-Lin PanRobert Lind OlesenYingming Tsai
    • Guodong ZhangJung-Lin PanRobert Lind OlesenYingming Tsai
    • H04J11/00
    • H04B7/0417H04B7/0617H04B7/086H04L5/023H04L25/0248H04L27/2601H04L27/2614H04L27/2647
    • A multiple-input multiple-output (MIMO) beamforming-based single carrier frequency division multiple access (SC-FDMA) system is disclosed. At the transmitter, a fast Fourier transform (FFT) is performed on transmission data to generate frequency domain data. The frequency domain transmit data is mapped to assigned subcarriers. An inverse fast Fourier transform (IFFT) is performed on the transmit data mapped to the assigned subcarriers to generate time domain transmit data. The time domain transmit data is transmitted via antennas. At a receiver, an FFT is performed on the received data to generate frequency domain received data. Subcarrier demapping is performed to extract data mapped on the assigned subcarriers. A channel estimator generates a channel matrix which is decomposed into U, D and VH matrices. A channel distortion and interference between transmit and receive antennas are equalized based on the decomposed channel matrices to the extracted frequency domain received data.
    • 公开了一种基于多输入多输出(MIMO)波束成形的单载波频分多址(SC-FDMA)系统。 在发射机上,对传输数据进行快速傅里叶变换(FFT)以产生频域数据。 频域发射数据被映射到分配的子载波。 对映射到所分配的子载波的发送数据执行快速傅里叶逆变换(IFFT),以生成时域发送数据。 时域发送数据通过天线发送。 在接收机处,对接收到的数据执行FFT以产生频域接收的数据。 执行子载波解映射以提取映射在所分配的子载波上的数据。 信道估计器生成分解为U,D和VH矩阵的信道矩阵。 基于分解的信道矩阵到提取的频域接收数据,发送和接收天线之间的信道失真和干扰被均衡。
    • 4. 发明申请
    • MIMO BEAMFORMING-BASED SINGLE CARRIER FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM
    • 基于MIMO射频的单载波频分多址接入系统
    • US20100246377A1
    • 2010-09-30
    • US12377975
    • 2006-09-25
    • Guodong ZhangJung-Lin PanRobert Lind OlesenYingming Tsai
    • Guodong ZhangJung-Lin PanRobert Lind OlesenYingming Tsai
    • H04J11/00
    • H04B7/0417H04B7/0617H04B7/086H04L5/023H04L25/0248H04L27/2601H04L27/2614H04L27/2647
    • A multiple-input multiple-output (MIMO) beamforming-based single carrier frequency division multiple access (SC-FDMA) system is disclosed. At the transmitter, a fast Fourier transform (FFT) is performed on transmission data to generate frequency domain data. The frequency domain transmit data is mapped to assigned subcarriers. An inverse fast Fourier transform (IFFT) is performed on the transmit data mapped to the assigned subcarriers to generate time domain transmit data. The time domain transmit data is transmitted via antennas. At a receiver, an FFT is performed on the received data to generate frequency domain received data. Subcarrier demapping is performed to extract data mapped on the assigned subcarriers. A channel estimator generates a channel matrix which is decomposed into U, D and VH matrices. A channel distortion and interference between transmit and receive antennas are equalized based on the decomposed channel matrices to the extracted frequency domain received data.
    • 公开了一种基于多输入多输出(MIMO)波束成形的单载波频分多址(SC-FDMA)系统。 在发射机上,对传输数据进行快速傅里叶变换(FFT)以产生频域数据。 频域发射数据被映射到分配的子载波。 对映射到所分配的子载波的发送数据执行快速傅里叶逆变换(IFFT),以生成时域发送数据。 时域发送数据通过天线发送。 在接收机处,对接收到的数据执行FFT以产生频域接收的数据。 执行子载波解映射以提取映射在所分配的子载波上的数据。 信道估计器生成分解为U,D和VH矩阵的信道矩阵。 基于分解的信道矩阵到提取的频域接收数据,发送和接收天线之间的信道失真和干扰被均衡。
    • 5. 发明授权
    • Method and apparatus for generating feedback information for transmit power control in a multiple-input multiple-output wireless communication system
    • 一种用于在多输入多输出无线通信系统中产生用于发射功率控制的反馈信息的方法和装置
    • US07630732B2
    • 2009-12-08
    • US11152435
    • 2005-06-14
    • Jung-Lin PanRobert Lind OlesenYingming Tsai
    • Jung-Lin PanRobert Lind OlesenYingming Tsai
    • H04B7/00
    • H01Q3/2605
    • The present invention is related to a method and apparatus for generating feedback information for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver comprise multiple antennae for transmission and reception. The transmitter comprises a power allocation unit for controlling transmit power based on a feedback received from the receiver. The receiver comprises a channel estimator and a singular value decomposition (SVD) unit. The channel estimator generates a channel matrix from a signal received from the transmitter and the SVD unit decomposes the channel matrix into D, U and V matrices. The receiver sends a feedback generated based on output from the SVD unit to the transmitter. The feedback may be one of an eigenvalue, a transmit power level or a power control bit or command. A hybrid scheme for selecting one of them based on channel condition may be implemented.
    • 本发明涉及一种用于在多输入多输出(MIMO)无线通信系统中产生用于发射功率控制的反馈信息的方法和装置。 发射机和接收机都包括用于传输和接收的多个天线。 发射机包括功率分配单元,用于基于从接收机接收的反馈来控制发射功率。 接收机包括信道估计器和奇异值分解(SVD)单元。 信道估计器从从发射机接收的信号中生成信道矩阵,并且SVD单元将信道矩阵分解为D,U和V矩阵。 接收机将基于SVD单元的输出产生的反馈发送到发射机。 反馈可以是特征值,发射功率电平或功率控制位或命令之一。 可以实现用于基于信道条件选择其中的一个的混合方案。